# A109122 (b-file synthesized from sequence entry) 0 20 1 9472 2 164052 3 1107200 4 4681300 5 14929920 6 39411092 7 90821632 8 188932500 9 362835200 10 653499220 11 1116640512 12 1825901012 13 2876339200 14 4388231700 15 6511185920 16 9428563732 17 13362216192 18 18577529300 19 25388780800 20 34164808020